Cover for cream-separators.



No. 652,834. Patented luly3, |900. S. H. CASWELL.

COVER FOR CREAM SEPARATDRS.

(Application filed Mar. 16, 1900.

.(No Model.)

5/ "l mlllllllllllll M Ililli www llllilllllllllllllllllll IV I?? 4- llmliiiiiiii' iillll" UNITED STATES PATENT GEEICE.,

sHELDON H. oAswELL', or NEWARK, NEW YORK.

COVER FOR CREAM-SEPARATORS.

SPECIFICATION forming partfof Letters Patent Ivo. o5`2,s34,`aa.tea July s, IQOO. Appumibiea Nimh 16,1900.l solai No. 8,933.v or@ model.)

To all whom tm/ay concern:A a

- Be it knownthat I, SHELDON H.Y CAswELL,

This invention relates to a cover for cream-Y separators, and particularly to one having de vices by which the milk introduced into the separator may be strained or aerat-ed andunder other conditions the can containing the milkcan be thoroughly ventilated, while the entrance of dust or dirt thereinto is prevented.

The invention has for an object to provide ay conical forml of cover having at its apex a screened aperture which may be used as a straining device, and about the walls of this aperture a removable aerating device is adapt-v ed to be secured, so that the plate thereof will receive the liquid passing through the strainer. v

A further object of the invention is to providean improved form of aerating device by means of which a small quantity of liquid will be retained over the apertures in the aerating-plate and the balance permitted to overflow from the edge of said plate.

A further object of the invention is to provide means for supporting the cover when used as a'straining or aerating'device above the body of the can and against any tilting movement of the same.

description, and the novel features thereof will be-particularly pointed out inl the pended claims.

In the drawings, Figure l represents a very The letter A indicates the can of a cream- 'separator,`which may be of any desired conguration, but usually of circular form, as shown in the present application. The cover AB of this can is provided with a flange portion B', adapted to fit within the walls of the can and with 'a top of substantially-conical shape, having inclined walls B2, extending to v,a central circular discharge-aperture B3,which is vprovided witha screening-'surfacej4. The parts thus far described permit a straining of the milk; but in order to catch any particles which might pass through the screen a fabric or thin cloth C may be placed over the screen and held in position by an annular metallic ring C of elastic character, whichholds the cloth C in an extended position over the screening-surface. The cover is also-provided upon its outer face with lifting-rings D, through which the linger may be passed to lift the cover, and these rings are also supplied with a smaller ring D', which is adapted to rest upon the edge ofthe can and support the cover above the same, as shown in Fig. 4, in case the holding device particularly designed therefor is not used.

For the purpose of aerating the milk I have provided an improved construction of aeratin g-plate embodying a substantially-horizontal plate E, provided with aseries of perforations E' and with an annular convex bead or iange E2 between the perforated portion and the edge E3 of the plate over which the liquid is discharged. This plate is removably y l f held in position by means of a band E4, from Other objects and advantages of the in ven# tion will hereinafter appear in the following,

which su pportin g-arms Eextend and are connected to the plate E. The ban'dis adapted to fit the circular 'portion B3 of the cover and is held in position against accidental removal or displacement by means of the bead B5 at the lower end ofthe circular portion B3. With this aerating device the liquid Hows upon the plate E and is discharged through the apertures in the same for the purpose of aeration. It', however, sufficient liquid passes-through the screen to fill the central depression-within the annular Iiange'E2, the same 'liows over this flange and is discharged at theedge portion E3 in a thin stream, thus producing an aeration of the milk along the entire periphery of the plate as well as at its central portion and secures results which are not obtain- IOO able when the overflow from an aerating device passes into the separator in a solid stream.

During the operation of aerating the milk or straining the saine it is desirable to retain the cover in position above the top of the can to allow the free access of air to the milk passing from the aerator. This is accomplished by means of a holding-frame F, which is composed of cross-bars F', extending from one side of the can to the other and provided at their ends with vertical posts F2, extending in opposite directions from the ends of the cross-bars F and at substantially right angles thereto. These posts or standards prevent the accidental displacement of the holdin g-frame from the can, and the post F2 thereof, which extends above the frame, engages the inclined wall B2 of the cover, thus preventing any tipping or tilting of the same if the milk be poured into the cover at one side.

thereof, or if any object be rested upon the cover, and thus all danger of overturning the cover is avoided. At the central portion of the can the cross-bars F are connected together by a frame F3 of any suitable configuration, through which the circular portion of the cover is passed and upon the upper edges of which the inclined walls of the cover rest.

In the use of the invention for the purpose 0f aerating the milk the cover is supported above the top of the can by means of the holding-frame F, and the milk passes through the cloth and screen, falling upon the aerating-plate, by which it is distributed and exposed to the air in its downward movement into the can, all of which is effected with the parts arranged as in Fig. l. It itbe desired, however, to simply strain the milk, this could be readily accomplished by turning the cover into the position shown in Fig. tand without the necessity of applying the holding-frame or aerating device, while when the cover is applied in the position shown in Fig. 5 the contents of the can will be ventilated without permitting the entrance of dust or other foreign matter into the same. In many cases it is desired to stretch a cloth covering over the bodyof the can, and this may be conveniently held in position by resting the frame F thereon.

It will be seen that the aerator described is removable, so that it can be cleansed, and is very eiiicient in its action, as it provides for the distribution of the milk in the most minute particles to permit the thorough aeration of the same. The holding-band C for the cloth above the screen is readily removable, so that the cloth can be replaced whenever desired. It will also be noticed that the rim B' upon the cover is extended to such a length as to form a retaining-receptacle for the milk to be strained, and when reversed upon the can in the position shown in Fig. 5 carries all drainage into the body of the can. The holdin g-frame for the cover when used as an aerator also firmly supports the same against tilting or accidental displacement, as it obtains a bearing at two points upon the inclined wall of the cover, or may be used to hold in position a cloth for preventing the entrance of dirt or insects into the can, as shown by dotted lines in Fig. l.

It will be obvious that changes can be made in the details of construction and configuration of the several parts without departing from the spirit of the invention as defined by the appended claims.

Having described my invention, what I claim as new is- 1. A cover for creaming-cans formed with an aperture provided with a screen, a horizontally-disposed aerating-plate having a perforated central portion separated from its periphery by an annular convex flange, and means for supporting said plate beneath said screen to receive and aerate liquid passing through said screen; substantially as specified.

2. An aerating-plate for a creaming apparatus comprising a substantially-flat plate having a perforated central portion surrounded by an annular convex bead, and a peripheral discharge portion beyond this bead, a band for supporting said plate, and hangers extending from said band to said plate; substantially as specified.

3. A cover for cream-separators provided with a discharging-neck having a screeningsurface, a band surrounding said neck, and an aerating-plate supported from said band and provided with a perforated central portion separated from its periphery by an annular convex iange; substantially as specified.

4. A cover for cream-separators provided with a discharging-neck having a screeningsurface, a band surrounding said neck, and an aerating-plate supported from said band and provided with a perforated central portion separated from its periphery by an annular convex flange, a holder for said cover having a supporting-frame surrounding the central discharge-neck of the cover and provided at its ends with posts extending downward to engage the side of the can and upward to engage the inclined wall of the cover; substantially as specified.

5. A holder for a cover or strainer consisting of cross-arms, a frame connecting the same, and posts or standards at the ends of said frame extending above and below the arms at substantially a right angle thereto; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

. SIIELDON Il. CASIVELL.

Witnesses:

PETER R. SLEIGHT, L. M. GENTHNER.

IIO 

